Improvement in lamp-chimneys



w. H. CULP.

Lamp Chimney. No. 49.089 Patented Aug. 1,1865.

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UNITED STATES PATENT OFFICE.

WM. H. GULF, OF HAMMONDSVILLE, OHIO.

IMPROVEMENT IN LAMP-CHIMNEYS.

Specification forming part of Letters Patent No. 19,089, dated August 1, 1865.

To all whom it may concern:

Be it known that I, \VILLIAM H. GULP, of Hammonds ville, Jefferson county, in the State of Ohio, have invented certain new and useful Improvements in Lamp-Chimneys and I do hereby declare that the following is afull and exact description thereof, reference being had to the accompanying drawing, and to the letters of reference marked thereon.

The nature ofmyinvention consists in making only that part of the chimney which surrounds the flame out of glass, while the upper part (about two-thirds of the whole length) is made of sheet metal, and the lower rim, by which it is secured to the lamp, is also of metal, the glass portion being inserted into and between the two metallic portions, which are connected by means of several wires, which at the same time serve to guard the glass.

In the drawing, A represents the glass portion of the lamp-chimney; B, the metallic chimney. This chimney should be formed ofa piece of sheet metal rolled in the desired conical form, with its edges slightly lapped, so as to admit of expansion and contraction without injury to the glass. Its lower edge should be rolled so as to lea e a suitablegroove to be fitted around the upper part of the glass shade A.

O is the metallic rim passing around the bottom of the glass, and serves to attach the chimney to the lamp. This rim 0 is formed of a strip of sheet metal curved into a trough and then rolled into a ring, with the concavity outward, so that it shall conform to the curve of the lower part of the glass shade A. The ends of this rim may not quite touch each other, or they may overlap each other, so as to allow for sudden expansion or contraction.

D are three, four, or more stout wires sure rounding but not touching the glass, and fastened at their ends to the rim 0 and the chimney B.

bottom prevents breakage there, and the wire which is glass from accidental blows or breakage by falling.

Having thus fully described my invention,

Letters Patent, is

1. The glass shade A, metallic chimney B,

constructed, arranged, and operating as described.

2. The metallic rim O,-constructed, arranged, and operating substantially as described.

hereunto set my hand this 17th day of April, 1865.

TM. H. O ULP.

In presence of- ELISABETH WATT, JAMES WATT.

The object of my invention is to produce a If it cleaned so often. The metallic rim bent on at the guards protect that portion of the chimney what I claim as new, and desire to secure by metallic rim (3, and guards D, the whole being In testimony that I claim the above I have 

